Senior Full-Stack Engineer — Partner Portal & Enterprise

SumUp; Berlin (NH); On-site; USD 116,000 - 162,000; Full time

Benefits offered by this job

Virtual Stock Option

L&D budget

Pension matching 20%

28 days paid leave

Urban Sports Club subsidy

Kita placement assistance

Office lunches subsidy

Sabbatical after 3 years

Referral bonus

Job summary

SumUp is looking for a Senior Full-Stack Engineer to own the Partner Portal, enabling partners to manage merchants, fees, and operations at scale. You will collaborate with CRM engineers and product stakeholders to ship features that reduce operational friction for the sales teams.

You will build the frontend with React/TypeScript/Next.js, design backend services in TypeScript and Go, and ensure reliability with monitoring and incident response.

Qualifications

• Proven TypeScript/React experience building scalable production-grade apps.
• RESTful APIs and large microservice systems experience.
• Kubernetes, CI/CD, and Terraform familiarity.
• CRM systems experience (e.g., Salesforce).
• Product mindset with ownership of end-to-end features.

Responsibilities

• Own and develop the Partner Portal frontend with React/TypeScript/Next.js.
• Build and maintain backend APIs and microservices in TypeScript and Go.
• Implement monitoring, incident response, and reliability improvements.
• Collaborate with Partnerships team to gather requirements and shape solutions.
• Participate in code reviews, ceremonies, and knowledge sharing.

Skills

TypeScript

React

Next.js

Remix

Nuxt

RESTful APIs

Go

Kubernetes

Terraform

CRM integration

Tools

Kubernetes

Terraform

Job description

SumUp is looking for a Senior Full-Stack Engineer to own the Partner Portal, enabling partners to manage merchants, fees, and operations at scale. You will collaborate with CRM engineers and product stakeholders to ship features that reduce operational friction for the sales teams.

You will build the frontend with React/TypeScript/Next.js, design backend services in TypeScript and Go, and ensure reliability with monitoring and incident response.